Tabitha is gathering a particular species of plant to test for its resistance to pesticides. she decides to select her test plants from one side of a highway.

which type of procedural error is being described?

experimental design

selection bias

human error

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

If animal agriculture was eliminated, how much grain would become available for human consumption?